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This campaign is no longer active, but has been archived.


Single-unit price: $25.00 + shipping

Not available / campaign end date: Sat, 07 Oct 2017 16:59:00 PDT

Backers icon

Backers: 121

Target icon campaign show

Target: 100

Funded icon show

Funded: 257

Product Details



Brand / Manufacturer

QWERTY Embedded Design, LLC

Product Description

LoFive is a lightweight SiFive Freedom E310 open source SoC evaluation kit. The E310 leverages the Free and Open RISC-V Instruction Set Architecture originally developed by UC Berkeley and now has wide industry support via the RISC-V Foundation. Don't let the board's understated name and openness fool you - this MCU packs some impressive specs and the board was designed by the prolific QWERTY Embedded Design founder, Michael Welling.


LowFive Schematics
(click to open a larger image)


  • MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz)
  • Storage - 128-Mbit SPI flash (ISSI IS25LP128)
  • Expansion - 2x 14-pin headers with JTAG, GPIO, PWM, SPI, UART, 5V, 3.3V and GND
  • Misc - 1x reset button, 16 MHz crystal
  • Power Supply - 5V via pin 1 on header; Operating Voltage: 3.3 V and 1.8 V
  • Dimensions - 38 x 18 mm (estimated)
  • License - CERN Open Hardware Licence v1.2


Blog Posts

Back Render

Why GroupGets?

This group buy will be used to fund the first batch and seed the community with a new RISC-V based microcontroller board.

External Links

Manufacturer product page

Purchase Information

Unit Deliverable

1 LoFive

Unit Price


Campaign Part #



Not available / campaign funded, end date: Sat, 07 Oct 2017 16:59:00 PDT

Factory Lead Time

3-5 weeks after close of campaign. Days

Options and Add-Ons

FTDI Breakout - FTDI FT2232H-56Q MINI MDL


FTDI Breakout used for programming the LoFive. ![Image of TDI FT2232H-56Q MINI MDL](

Premium Female/Male 'Extension' Jumper Wires - 20 x 3" (7.62cm)


20x3" (7.62cm) Female to Male Jumper Wires. ![Female to Male Jumper Wire Image](

Premium Male/Male Jumper Wires - 20 x 3" (7.62cm)


20x3" (7.62cm) Male to Male Jumper Wires. ![Male to Male Jumper Wire Image](

Premium Female/Female Jumper Wires - 20 x 3" (7.62cm)


20x3" (7.62cm) Female to Female Jumper Wires. ![Female to Female Jumper Wire Image](

Full sized breadboard


This is a 'full-size' breadboard, 830 tie points. Good for small and medium projects. It's 2.2" x 7" (5.5 cm x 17 cm) with a standard double-strip in the middle and two power rails on both sides. The back is made of foam double-sided tape, if you remove the protective paper you can attach it to a flat clean surface. ![Breadboard Image](

Diffused RGB 5mm LED (25 pack)


Diffused 5mm tri-color LEDs with separate red, green and blue LED chips inside! * Pack of 25 diffused RGB LEDs * 5mm diameter * Red: 630 nm wavelength, Green: 525 nm, Blue: 460 nm * Red: 1.9-2.3V Forward Voltage, at 20mA current, Green: 3.0-3.4V, Blue: 3.0-3.4V * Red: 3000 mcd typical brightness, Green: 5000 mcd, Blue: 900 mcd ![LED Image](

Through-Hole Resistors - 220 ohm 5% 1/4W - Pack of 25


![Resistor Image](

Campaign discussion forums are intended for questions about the product such as specifications or to share ideas about applications. The campaign initiator or GroupGets may also send out important one-to-many updates on this channel. This is not the place for individual technical support inquiries. For help or questions about an order, please log a ticket here: Support

  • Odtmo2xo normal

    I have just created the GroupGet for LoFive RISC-V!

    Post last edited: almost 4 years ago

  • 5927943?v=4

    Shipping to europe is so expensive, definitly trying to get more people to do a groupbuy for this. Netherlands anyone?

  • 9zi7mnmg normal

    Another creative overseas shipping option may be to use "shipito" to send this board and items from other US sites to reduce overall shipping costs: We used to have cheaper overseas shipping options but we had a high rate of loss of expensive items. We are re-evaluating our current stance for lower cost items going forward but unfortunately we won't have a solution implemented for this campaign.

  • 9zi7mnmg normal

    Quick Update: The SiFive chips are on order and the contract manufactuer is ramping up the board fab now

    Post last edited: over 3 years ago

  • 9zi7mnmg normal

    Quick update: The SiFive MCU's are on the way to the CM. The test rig is being designed by Qwerty and the CM is going to produce a test panel for us to QA with before we make the full batch.

  • Photo
    Jasem Mutlaq

    Great board! I'm trying to get this but it says "Buy Disabled"... is there a way to order this now?

  • 9zi7mnmg normal

    Jasem, Round 1 is closed but we are producing extras to put in our store. Check back in a few weeks.

  • Photo
    Whitham Reeve

    What is the programming procedure? How do I write to the onboard storage?

    Any documentation you can point me to would be appreciated.

  • 9zi7mnmg normal

    The on-board flash is programmed via JTAG and a special version of OpenOCD built into the Freedom-E SDK.
    LoFive currently support using the FT2232H-56Q FTDI breakout adapter.

    Wire the breakout adapter as follows:

    LoFive Pin FT2232H-56Q Breakout Pin
    +5Vin VBS
    TCK AD0
    TDO AD2
    TMS AD3
    TDI AD1
    UART0.TX BD1
    UART0.RX BD0

    This will power the board and allow you to program it with an updated Freedom-E SDK.
    The Freedom-E SDK version that is ported for LoFive is here:

    Once the SDK is installed and compiled you can load the code via make upload.

    For instance to load the LED demo:
    make upload PROGRAM=led_fade BOARD=freedom-e300-lofive

    This SDK only supports running on Linux.

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